Index: uspace/app/mkfat/fat_dentry.h
===================================================================
--- uspace/app/mkfat/fat_dentry.h	(revision 3cd27c13a5fac2432adfe12e5561d23ebaa6fc27)
+++ uspace/app/mkfat/fat_dentry.h	(revision 3cd27c13a5fac2432adfe12e5561d23ebaa6fc27)
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 2008 Jakub Jermar
+ * Copyright (c) 2011 Oleg Romanenko
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup fs
+ * @{
+ */ 
+
+#ifndef FAT_FAT_DENTRY_H_
+#define FAT_FAT_DENTRY_H_
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <unaligned.h>
+
+#define IS_D_CHAR(ch) (isalnum(ch) || ch == '_')
+#define FAT_STOP_CHARS "*?/\\\n\t|'"
+
+#define FAT_NAME_LEN		8
+#define FAT_EXT_LEN		3
+#define FAT_VOLLABEL_LEN	11
+
+#define FAT_NAME_DOT		".       "
+#define FAT_NAME_DOT_DOT	"..      "
+#define FAT_EXT_PAD		"   "
+
+#define FAT_ATTR_RDONLY   0x01
+#define FAT_ATTR_HIDDEN   0x02
+#define FAT_ATTR_SYSTEM   0x04
+#define FAT_ATTR_VOLLABEL 0x08
+#define FAT_ATTR_SUBDIR   0x10
+#define FAT_ATTR_ARCHIVE  0x20
+#define FAT_ATTR_LFN \
+    (FAT_ATTR_RDONLY | FAT_ATTR_HIDDEN | FAT_ATTR_SYSTEM | FAT_ATTR_VOLLABEL)
+    
+#define FAT_LCASE_LOWER_NAME	0x08
+#define FAT_LCASE_LOWER_EXT	0x10
+
+#define FAT_PAD			' '
+#define FAT_LFN_PAD	0xffff
+#define FAT_SFN_CHAR '_'
+
+#define FAT_DENTRY_UNUSED	0x00
+#define FAT_DENTRY_E5_ESC	0x05
+#define FAT_DENTRY_DOT		0x2e
+#define FAT_DENTRY_ERASED	0xe5
+#define FAT_LFN_LAST		0x40
+#define FAT_LFN_ERASED		0x80
+
+#define FAT_LFN_ORDER(d) ((d)->lfn.order)
+#define FAT_IS_LFN(d) \
+    ((FAT_LFN_ORDER((d)) & FAT_LFN_LAST) == FAT_LFN_LAST)
+#define FAT_LFN_COUNT(d) \
+    (FAT_LFN_ORDER((d)) ^ FAT_LFN_LAST)
+#define FAT_LFN_PART1(d) ((d)->lfn.part1)
+#define FAT_LFN_PART2(d) ((d)->lfn.part2)
+#define FAT_LFN_PART3(d) ((d)->lfn.part3)
+#define FAT_LFN_ATTR(d) ((d)->lfn.attr)
+#define FAT_LFN_CHKSUM(d) ((d)->lfn.check_sum)
+
+#define FAT_LFN_NAME_LEN    260                           /* characters */
+#define FAT_LFN_NAME_SIZE   STR_BOUNDS(FAT_LFN_NAME_LEN)  /* bytes */
+#define FAT_LFN_MAX_COUNT   20
+#define FAT_LFN_PART1_SIZE  5
+#define FAT_LFN_PART2_SIZE  6
+#define FAT_LFN_PART3_SIZE  2
+#define FAT_LFN_ENTRY_SIZE \
+    (FAT_LFN_PART1_SIZE + FAT_LFN_PART2_SIZE + FAT_LFN_PART3_SIZE)
+
+typedef enum {
+	FAT_DENTRY_SKIP,
+	FAT_DENTRY_LAST,
+	FAT_DENTRY_FREE,
+	FAT_DENTRY_VALID,
+	FAT_DENTRY_LFN,
+	FAT_DENTRY_VOLLABEL
+} fat_dentry_clsf_t;
+
+typedef union {
+	struct {
+		uint8_t		name[8];
+		uint8_t		ext[3];
+		uint8_t		attr;
+		uint8_t		lcase;
+		uint8_t		ctime_fine;
+		uint16_t	ctime;
+		uint16_t	cdate;
+		uint16_t	adate;
+		union {
+			uint16_t	eaidx;		/* FAT12/FAT16 */
+			uint16_t	firstc_hi;	/* FAT32 */
+		} __attribute__ ((packed));
+		uint16_t	mtime;
+		uint16_t	mdate;
+		union {
+			uint16_t	firstc;		/* FAT12/FAT16 */
+			uint16_t	firstc_lo;	/* FAT32 */
+		} __attribute__ ((packed));
+		uint32_t	size;
+	} __attribute__ ((packed));
+	struct {
+		uint8_t		order;
+		uint16_t	part1[FAT_LFN_PART1_SIZE];
+		uint8_t		attr;
+		uint8_t		type;
+		uint8_t		check_sum;
+		uint16_t	part2[FAT_LFN_PART2_SIZE];
+		uint16_t	firstc_lo; /* MUST be 0 */
+		uint16_t	part3[FAT_LFN_PART3_SIZE];
+	} __attribute__ ((packed)) lfn;
+} __attribute__ ((packed)) fat_dentry_t;
+
+#endif
+
+/**
+ * @}
+ */